Three-dimensional flexible rectifying device

Abstract

The invention relates to a three-dimensional flexible rectifying device, which comprises a fixing mechanism, a plurality of connecting mechanisms and a plurality of connecting mechanisms, and is characterized in that the fixing mechanism comprises a water-permeable hollow framework, and the hollow framework is of a water-drop-shaped structure; the follow-up mechanism is connected to the tail end of the fixing mechanism, the follow-up mechanism and the fixing mechanism are integrally of a long water drop-shaped structure, the follow-up mechanism comprises a plurality of flexible wire harnesses, the front ends of the flexible wire harnesses are fixed to the hollow framework, and the tail ends of the flexible wire harnesses are free ends. A plurality of flexible wire harnesses of the follow-up mechanism twist along with flow in a turbulent flow field, and the flexible wire harnesses shear dynamic stiffness to provide constraint reaction and damp to dissipate pulsation energy, so that vortexes in different directions are broken to achieve the rectification purpose, which is different from a fixed bent plate type flow guide plate rectification structure, the efficiency is higher, and the rectification effect is better. And the trafficability of fluid and the stability of a flow field are effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of underwater fluid dynamics experiments, and in particular to a three-dimensional flexible rectification device. Background Art

[0002] Circulating water tunnels are common marine vehicle test platforms at home and abroad. The research on fluid dynamic acoustics in various countries around the world relies on circulating water tunnels / water tanks to carry out experimental research. Circulating water tunnels / water tanks are mainly used for marine vehicle propeller model and structural model tests. They can measure propeller noise and dynamic force in the flow field, as well as the hydrodynamic noise of the structure in the flow field. They are essential test devices for studying the propeller noise and hydrodynamic noise mechanism of marine vehicles.

[0003] The stable flow field of the test section during the operation of the circulating water tunnel is the basis and prerequisite for the hydrodynamic test. The high-speed flowing liquid in the circulating water tunnel will produce a strong impact when passing through the bend, and will produce serious flow separation near the wall, causing the water flow to generate vortices at the corners of the bend.

[0004] On the one hand, the formation of vortices will block the upstream flow, occupy the original flow space, and affect the stable flow velocity characteristics. On the other hand, the continuous transport of large-scale vortices to the downstream will produce strong flow unevenness and flow field instability in three-dimensional space. In addition, unstable operation characteristics will also cause strong vibration and noise.

[0005] The flow field of the fluid flowing through the circulating water tunnel test section must ensure high stability and extremely low turbulence, and the measurement of pressure pulsation and noise also requires reducing the impact of the environment. Therefore, the vortex of flow instability caused by the bends and other locations becomes an important factor affecting the operation and test of the entire circulating water tunnel.

[0006] In the related technology, the commonly used rectification method at home and abroad is to add arc-shaped guide plates (such as Figure 1 As shown in the figure, the flow field stability is improved by separating the cavity with guide plates and reducing turbulence. However, the non-uniformity and instability of the flow field are more significant in three-dimensional characteristics, and the two-dimensional guide plates are mainly arranged in concentric arcs along the radial direction of the pipe bend, which only has a one-dimensional rectifying effect in the radial direction of the bend and has no effect in other directions.

[0007] The existing circulating water tunnel rectifying device usually uses an arc-shaped curved plate as a guide plate to suppress turbulence. The guide plate is welded and installed inside the water tunnel bend pipe in multiple pieces arranged in parallel to reduce flow field instability such as flow separation caused by the bend pipe.

[0008] This fixed curved plate does not have the ability to adjust under different working conditions. Under extreme working conditions, the ability to adjust the stability of the flow field is limited. The guide plates are installed in parallel along the radial direction of the pipe bend, and only have a certain adjustment ability in the radial direction; the rigid guide plate has almost no deformation and cannot pulsate with the three-dimensional turbulent field to consume vortex energy.

[0009] In addition, most guide plates are fixedly installed and cannot be adjusted for different flow rates. The adjustment of the flow field has certain limitations, and the rectification effect has reached a bottleneck. More importantly, the rigid guide plate cannot move in the flow field, and the reaction force provided by the dynamic stiffness of the guide plate and the energy dissipation provided by the damping cannot be used to suppress turbulence.

[0010] Although simulation calculations of two-dimensional flexible guide plates have been conducted in other pipeline studies, there is no rectification structure that can efficiently rectify the flow as the operating conditions of the water tunnel change and effectively reduce the non-uniformity of the three-dimensional flow in the flow field. Summary of the invention

[0011] The embodiment of the present application provides a three-dimensional flexible straightening device to solve the problem in the related art that the rigid guide plate cannot move with the flow field and the turbulence cannot be suppressed by utilizing the reaction force provided by the dynamic stiffness of the guide plate and the energy dissipation provided by the damping.

[0012] A first aspect of an embodiment of the present application provides a three-dimensional flexible rectifying device, comprising:

[0013] A fixing mechanism, wherein the fixing mechanism comprises a water-permeable hollow frame, and the hollow frame has a water drop-shaped structure;

[0014] A follower mechanism, wherein the follower mechanism is connected to the end of the fixing mechanism, and the follower mechanism and the fixing mechanism are in a long teardrop-shaped structure as a whole;

[0015] The follow-up mechanism comprises a plurality of flexible wire harnesses, the front ends of the flexible wire harnesses are fixed on the hollow frame, and the ends of the flexible wire harnesses are free ends.

[0016] In some embodiments: the hollow skeleton includes a plurality of coaxially arranged rigid circular rings with gradually increasing diameters, and two adjacent rigid circular rings are spaced apart and connected to each other by a plurality of rigid longitudinal ribs.

[0017] In some embodiments: the fixing mechanism also includes a plurality of hooks connected to the hollow skeleton to fix the hollow skeleton in the curved waterway.

[0018] In some embodiments: the plurality of flexible wire harnesses are distributed sequentially from inside to outside on the hollow skeleton, and the length of the flexible wire harnesses located inside the hollow skeleton is greater than the length of the flexible wire harnesses located outside the hollow skeleton.

[0019] In some embodiments: the cross-section of the flexible wire harness is a circular structure, the front end of the flexible wire harness is a teardrop shape, and the end of the flexible wire harness is a cone shape.

[0020] In some embodiments: the flexible harness is a cylindrical shell structure with closed ends and a hollow middle, and the gravity of the flexible harness is equal to the buoyancy of the flexible harness in the liquid.

[0021] In some embodiments: the flexible harness is made of a multi-layer composite polymer material or a polymer material with embedded steel mesh.

[0022] A second aspect of the embodiment of the present application provides a circulating water tunnel, comprising:

[0023] A circulating water channel, wherein the circulating water channel comprises a plurality of straight test water channels and a plurality of curved water channels, wherein the plurality of straight test water channels and the plurality of curved water channels are connected end to end to form an annular channel;

[0024] Each of the curved water channels is provided with a three-dimensional flexible rectifying device as described in any of the above embodiments.

[0025] In some embodiments: the inner diameter of the curved waterway is D, and the fixing mechanism of the three-dimensional flexible fairing device is fixed upstream of the curved waterway and the distance from the curved position of the curved waterway is 1D-2D;

[0026] The fixing mechanism is coaxially fixed in the curved water channel, and the ratio of the outer diameter of the fixing mechanism to the inner diameter of the curved water channel is 1 / 3-1 / 2.

[0027] In some embodiments: the inner diameter of the curved water channel is D, and the ratio of the length of the flexible wire bundle of the three-dimensional flexible fairing device to the inner diameter of the curved water channel is 7-10;

[0028] The end of the flexible harness is located downstream of the curved waterway and is 5D-9D away from the curved position of the curved waterway.

[0029] The beneficial effects of the technical solution provided by this application include:

[0030] The embodiment of the present application provides a three-dimensional flexible rectifying device, because the three-dimensional flexible rectifying device for a circulating water tunnel of the present application is provided with a fixing mechanism, the fixing mechanism includes a water-permeable hollow skeleton, and the cross-sectional size of the hollow skeleton is a water drop-shaped structure that gradually increases from the upstream surface to the downstream surface; a follower mechanism, the follower mechanism includes a plurality of flexible wire harnesses, the front end of the flexible wire harness is fixed on the hollow skeleton, and the end of the flexible wire harness is a free end. The follower mechanism is connected to the circulating water tunnel that needs rectification through the fixing mechanism, provides rectification for the turbulence generated in the circulating water tunnel, and reduces the instability and unevenness of the flow field.

[0031] Therefore, the three-dimensional flexible rectifying device for circulating water tunnel of the present application is divided into two parts: a fixed mechanism and a follower mechanism. The fixed mechanism is provided with a water-permeable hollow skeleton, and the cross-sectional size of the hollow skeleton is a water drop-shaped structure that gradually increases from the upstream surface to the downstream surface. The upstream surface of the hollow skeleton is streamlined and the whole is a hollow structure, which significantly reduces the blocking effect caused by the rectifying device. Without affecting the normal flow of water, the hollow skeleton facilitates the arrangement of several flexible wire harnesses of the follower mechanism in the curved waterway.

[0032] Several flexible wire bundles of the follower mechanism twist with the flow in the turbulent field, and the shear dynamic stiffness of the flexible wire bundles provides a restraining reaction force and damping to dissipate the pulsating energy, thereby breaking up the vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate type guide plate rectification structure and has higher efficiency. Compared with the fixed curved plate type guide plate, the rectification device of the present application has higher adaptability, and the flexible wire bundle has a three-dimensional adjustment function, which can effectively improve the rectification efficiency. The present application has a lower blocking effect on the flow field, and the rectification device of the present application has a simple structure. The frontal surface adopts a streamlined structure, which effectively guarantees the passability of the fluid and the stability of the flow field. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a schematic diagram of the arrangement of the arc-shaped guide plate in the circulating water tunnel in the background technology;

[0035] Figure 2 A schematic diagram of the structure of a three-dimensional flexible rectifying device according to an embodiment of the present application;

[0036] Figure 3 A structural stereogram of a hollow skeleton according to an embodiment of the present application;

[0037] Figure 4This is a structural front view of the hollow skeleton of the embodiment of the present application;

[0038] Figure 5 A top view of the structure of the hollow skeleton of the embodiment of the present application;

[0039] Figure 6 A structural stereogram of a flexible wiring harness according to an embodiment of the present application;

[0040] Figure 7 This is a schematic diagram of the arrangement of a three-dimensional flexible rectifying device in a curved waterway according to an embodiment of the present application;

[0041] Figure 8 This is a schematic diagram of the connection of the hollow skeleton in a curved waterway according to an embodiment of the present application.

[0042] Reference numerals:

[0043] 1. Hollow skeleton; 2. Flexible wire harness; 3. Hook; 4. Curved waterway; 11. Rigid circular ring; 12. Rigid longitudinal reinforcement. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] The embodiment of the present application provides a three-dimensional flexible straightening device, which can solve the problem in the related art that the rigid guide plate cannot move with the flow field and cannot use the reaction force provided by the dynamic stiffness of the guide plate and the energy dissipation provided by the damping to suppress turbulence.

[0046] See also Figure 2 As shown, the first aspect of the embodiment of the present application provides a three-dimensional flexible rectifying device, including:

[0047] The fixing mechanism comprises a water-permeable hollow frame 1, and the cross-sectional size of the hollow frame 1 is a water drop-shaped structure that gradually increases from the upstream surface to the downstream surface. The upstream surface of the hollow frame 1 is streamlined and the entire structure is a hollow structure, which significantly reduces the blocking effect caused by the rectifying device. Without affecting the normal flow of water, the hollow frame 1 facilitates the arrangement of several flexible harnesses 2 of the follower mechanism in the curved waterway 4.

[0048] The follower mechanism is connected to the end of the fixed mechanism, and the follower mechanism and the fixed mechanism are in a long teardrop-shaped structure as a whole, which effectively reduces the flow resistance of the rectifying device. The follower mechanism includes a plurality of flexible harnesses 2, the front end of which is fixed on the hollow skeleton 1, and the end of which is a free end. The flexible harness 2 twists with the flow in the turbulent field, and the shear dynamic stiffness of the flexible harness 2 provides a restraining reaction force and damping to dissipate the pulsating energy, thereby breaking up the vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate guide plate rectification structure and has higher efficiency.

[0049] The three-dimensional flexible rectifying device for a circulating water tunnel of the embodiment of the present application is divided into two parts: a fixed mechanism and a follower mechanism. The fixed mechanism is provided with a water-permeable hollow skeleton 1, and the cross-sectional size of the hollow skeleton 1 gradually increases from the upstream surface to the downstream surface. The upstream surface of the hollow skeleton 1 is streamlined and the whole is a hollow structure, which significantly reduces the blocking effect caused by the rectifying device. Without affecting the normal flow of water, the hollow skeleton 1 facilitates the arrangement of several flexible wire harnesses 2 of the follower mechanism in the curved waterway 4.

[0050] Several flexible harnesses 2 of the follower mechanism twist with the flow in the turbulent field, and the shear dynamic stiffness of the flexible harness 2 provides a restraining reaction force and damping to dissipate the pulsating energy, thereby breaking up the vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate type guide plate rectification structure and has higher efficiency. Compared with the fixed curved plate type guide plate, the rectification device of the present application has higher adaptability, and the flexible harness 2 has a three-dimensional adjustment function, which can effectively improve the rectification efficiency. The present application has a lower blocking effect on the flow field, and the rectification device of the present application has a simple structure, and the frontal surface adopts a streamlined structure, which effectively guarantees the fluid passability and the stability of the flow field.

[0051] The three-dimensional flexible rectification device for a circulating water tunnel in the embodiment of the present application adopts a flexible wire harness 2 for rectification. By selecting the shear stiffness of the flexible wire harness 2, the flexible wire harness 2 can be deformed with the velocity distribution and pressure distribution of the flow field (the shear stiffness cannot be too large), and can also provide a deformation reaction force to counteract the unevenness of the fluid pressure (the shear stiffness cannot be too small). At the same time, the flexible wire harness 2 damps and consumes the pressure pulsation energy transmitted by the flow field, so that the velocity and pressure distribution in the flow field tend to be uniform, thereby realizing the three-dimensional rectification of the water tunnel bend flow field.

[0052] In some optional embodiments: see 2 to Figure 4 As shown, an embodiment of the present application provides a three-dimensional flexible rectifying device, wherein a hollow skeleton 1 of the three-dimensional flexible rectifying device includes a plurality of coaxially arranged rigid circular rings 11 with gradually increasing diameters, and two adjacent rigid circular rings 11 are arranged at intervals and connected to each other by a plurality of rigid longitudinal ribs 12.

[0053] A plurality of rigid circular rings 11 and a plurality of rigid longitudinal ribs 12 are connected to each other to form a hollow mesh water drop-shaped structure. The hollow skeleton 1 has the functions of diversion and water permeability, and reduces the resistance to the water flow. The fixing mechanism also includes four hooks 3 connected to the hollow skeleton 1 to fix the hollow skeleton 1 in the curved waterway 4. The hollow skeleton 1 faces the incoming flow direction, and the flexible harness 2 floats downstream thereof. The hook 3 is in a locked state during the water flow circulation process. When the rectifier needs to be replaced after drainage, the lock of the hook 3 is opened to disassemble, replace or adjust the rectifier.

[0054] In some optional embodiments: see 2 to Figure 6 As shown, an embodiment of the present application provides a three-dimensional flexible rectifying device, in which multiple flexible wire harnesses 2 are distributed in sequence from the inside to the outside on a hollow skeleton 1, and the length of the flexible wire harness 2 located on the inner side of the hollow skeleton 1 is greater than the length of the flexible wire harness 2 located on the outer side of the hollow skeleton 1.

[0055] The cross section of the flexible harness 2 is a circular structure, the front end of the flexible harness 2 is a teardrop shape, and the end of the flexible harness 2 is a cone shape. The flexible harness 2 is a cylindrical shell structure with closed ends and a hollow middle. The gravity of the flexible harness 2 is equal to the buoyancy of the flexible harness 2 in the liquid. The flexible harness 2 is made of a multi-layer composite polymer material or a polymer material with an embedded steel mesh.

[0056] Each flexible wire harness 2 is a hollow shell. The design of the cross-sectional diameter of the internal cavity of the flexible wire harness 2 makes the buoyancy of the flexible wire harness 2 in water equal to its weight, thereby ensuring that the flexible wire harness 2 floats in a horizontal straight line in still water and a uniform flow field. The entire follower mechanism is also in a horizontal straight line shape, preventing the flexible wire harness 2 from sinking or floating and increasing the flow resistance.

[0057] Each flexible harness 2 is evenly distributed on the hollow frame 1, the middle main body section of the flexible harness 2 is a hollow cylinder, the front face (front end) of the flexible harness 2 is streamlined - a teardrop shape, and the tail is a cone. This combination minimizes the flow resistance of each flexible harness 2. In addition, the multiple flexible harnesses 2 are distributed on the hollow frame 1 in a long middle and short surrounding pattern, so that the entire follower mechanism is the same as each flexible harness 2, with a teardrop shape at the head, a cylinder in the middle, and a cone at the tail, further reducing the flow resistance of the entire harness.

[0058] Each flexible harness 2 is a hollow shell, and the diameter of the cylindrical shell in the middle of the main body is (T+2d), d is the shell thickness, and T is the diameter of the hollow cavity. T is designed according to the following formula to make the gravity equal to the buoyancy, thereby ensuring that the flexible harness 2 is horizontally straight in still water and uniform flow field, and preventing the flexible harness 2 from falling and increasing flow resistance.

[0059]

[0060] Where ρ1 is the shell material density of the flexible harness 2, and ρ2 is the water density (ρ1>ρ2). The material of the flexible harness 2 can be a composite material, such as a multi-layer composite polymer material or a polymer material with embedded steel mesh, to optimize the bending stiffness of the flexible harness 2, increase damping, and improve rectification efficiency. At this time, ρ1 is the equivalent density.

[0061] The follow-up mechanism as a whole and each flexible wire harness 2 therein twist and deform in the flow field as the incoming flow velocity and pressure change, reducing the non-uniformity and instability of the flow field from all directions, breaking up the vortex structures in different directions, reducing the unsteady characteristics of the flow field, consuming the original three-dimensionally distributed vortex energy, and prompting the water flow to reduce turbulence as quickly as possible at the bend position and flow smoothly and evenly along the flow direction.

[0062] See also Figure 7 and Figure 8 As shown, referring to the figure, the second aspect of the embodiment of the present application provides a circulating water tunnel, including:

[0063] A circulating water channel, the circulating water channel comprises a plurality of straight test water channels and a plurality of curved water channels 4, the plurality of straight test water channels and the plurality of curved water channels 4 are connected end to end to form a ring channel. A three-dimensional flexible rectifying device as described in any of the above embodiments is arranged in each curved water channel 4. The inner diameter of the curved water channel 4 is D, and the fixing mechanism of the three-dimensional flexible rectifying device is fixed upstream of the curved water channel 4 and the distance from the curved position of the curved water channel 4 is 1D-2D.

[0064] The fixing mechanism is coaxially fixed in the curved waterway 4, and the ratio of the outer diameter of the hollow frame 1 of the fixing mechanism to the inner diameter of the curved waterway 4 is 1 / 3-1 / 2. The inner diameter of the curved waterway 4 is D, and the ratio of the length of the flexible harness 2 of the three-dimensional flexible rectifier to the inner diameter of the curved waterway 4 is 7-10; the end of the flexible harness 2 is located downstream of the curved waterway 4 and the distance from the curved position of the curved waterway 4 is 5D-9D.

[0065] The present application comprehensively considers the internal structural characteristics of the circulating water tunnel and the influence of the curved waterway 4 and other positions on the flow field, and adopts a rectifying device that combines a fixed mechanism with a follower mechanism, and the number and length of the flexible harness 2 of the follower mechanism of the rectifying device can be adjusted. Compared with the current traditional guide plate, the rectifying device of the present application mainly adjusts the unstable incoming flow through the follower mechanism, and the follower mechanism can move with the flow field.

[0066] The follower mechanism can enter into the vortex structure generated upstream of the curved waterway 4, fundamentally breaking up the large-scale unstable flow characteristics. The refined small-scale vortex structure moves with the flexible wire bundle 2, and its energy is further consumed through the swing of the flexible wire bundle 2, thereby gradually forming a smoother uniform flow along the flow direction.

[0067] The flow separation generated at the corners of the curved water channel during the water circulation process in the circulating water tunnel will have a strong side effect on the turbulence and flow field stability required by the straight test water channel. On the one hand, the unstable flow field structure will have a great impact on the measurement of parameters such as pressure, velocity and noise in the straight test water channel, making the test results less reliable; on the other hand, the flow characteristics caused by the corners of the circulating water tunnel under different working conditions are also different, and the non-uniform characteristics of the downstream caused by different incoming flow characteristics are also different.

[0068] The rectifying device used in this application can completely break up and consume the turbulent unstable characteristics in the flow field in three dimensions, thereby achieving the effect of improving the uniformity of the flow field and reducing the turbulence, which can ensure the implementation of the hydrodynamic test of the circulating water tunnel. The rectifying device adopts a combination of a hollow skeleton 1 of a metal structure and a flexible harness 2 of a composite material, which is also conducive to reducing the weight of the structure, ensuring the flexible characteristics of the follower mechanism, and reducing the flow field resistance. In addition, the entire rectifying device and the frontal surface of the flexible harness 2 therein are streamlined in design, which is more conducive to reducing the resistance caused by the impact of the incoming flow, thereby further reducing the flow resistance.

[0069] In summary, the rectifier and circulating water tunnel are easy to process, easy to install and position, and have a wide range of adaptability. They can be designed specifically for specific circulating water tunnel operating conditions to reduce flow field instability, improve flow field uniformity, and reduce turbulence, thereby providing a high-uniformity flow field for the test section.

[0070] How it works

[0071] The embodiment of the present application provides a three-dimensional flexible rectifying device, because the three-dimensional flexible rectifying device for a circulating water tunnel of the present application is provided with a fixing mechanism, the fixing mechanism includes a water-permeable hollow skeleton 1, and the cross-sectional size of the hollow skeleton 1 is a water drop-shaped structure that gradually increases from the upstream surface to the downstream surface; a follower mechanism, the follower mechanism includes a plurality of flexible wire harnesses 2, the front end of the flexible wire harness 2 is fixed on the hollow skeleton 1, and the end of the flexible wire harness 2 is a free end. The follower mechanism is connected to the circulating water tunnel that needs rectification through the fixing mechanism, provides rectification for the turbulence generated in the circulating water tunnel, and reduces the instability and unevenness of the flow field.

[0072] Therefore, the three-dimensional flexible rectifying device for circulating water tunnel of the present application is divided into two parts: a fixed mechanism and a follower mechanism. The fixed mechanism is provided with a water-permeable hollow skeleton 1, and the cross-sectional size of the hollow skeleton 1 is a water drop-shaped structure that gradually increases from the upstream surface to the downstream surface. The upstream surface of the hollow skeleton 1 is streamlined and the whole is a hollow structure, which significantly reduces the blocking effect caused by the rectifying device. Without affecting the normal flow of water, the hollow skeleton 1 facilitates the arrangement of several flexible wire harnesses 2 of the follower mechanism in the curved waterway 4.

[0073] Several flexible harnesses 2 of the follower mechanism twist with the flow in the turbulent field, and the shear dynamic stiffness of the flexible harness 2 provides a restraining reaction force and damping to dissipate the pulsating energy, thereby breaking up the vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate type guide plate rectification structure and has higher efficiency. Compared with the fixed curved plate type guide plate, the rectification device of the present application has higher adaptability, and the flexible harness 2 has a three-dimensional adjustment function, which can effectively improve the rectification efficiency. The present application has a lower blocking effect on the flow field, and the rectification device of the present application has a simple structure, and the frontal surface adopts a streamlined structure, which effectively guarantees the fluid passability and the stability of the flow field.

[0074] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0075] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0076] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A three-dimensional flexible rectifying device, characterized in that: include: A fixing mechanism, the fixing mechanism comprising a water-permeable hollow frame (1), and the hollow frame (1) is in a water drop-shaped structure; A follower mechanism, wherein the follower mechanism is connected to the end of the fixing mechanism, and the follower mechanism and the fixing mechanism are in a long teardrop-shaped structure as a whole; The follower mechanism comprises a plurality of flexible wire harnesses (2), the front ends of the flexible wire harnesses (2) are fixed on the hollow frame (1), and the ends of the flexible wire harnesses (2) are free ends.

2. A three-dimensional flexible rectifying device as claimed in claim 1, characterized in that: The hollow skeleton (1) comprises a plurality of coaxially arranged rigid circular rings (11) with gradually increasing diameters, wherein two adjacent rigid circular rings (11) are arranged at intervals and connected to each other via a plurality of rigid longitudinal ribs (12).

3. A three-dimensional flexible rectifying device as claimed in claim 1 or 2, characterized in that: The fixing mechanism also includes a plurality of hooks (3) connected to the hollow frame (1) so as to fix the hollow frame (1) in the curved waterway (4).

4. A three-dimensional flexible rectifying device as claimed in claim 1, characterized in that: The plurality of flexible wire harnesses (2) are distributed on the hollow frame (1) in sequence from the inside to the outside, and the length of the flexible wire harness (2) located on the inside of the hollow frame (1) is greater than the length of the flexible wire harness (2) located on the outside of the hollow frame (1).

5. A three-dimensional flexible rectifying device as claimed in claim 1 or 4, characterized in that: The cross section of the flexible wire harness (2) is a circular structure, the front end of the flexible wire harness (2) is a teardrop shape, and the end of the flexible wire harness (2) is a cone shape.

6. A three-dimensional flexible rectifying device according to claim 1 or 4, characterized in that: The flexible wire harness (2) is a cylindrical shell structure with closed ends and a hollow middle. The gravity of the flexible wire harness (2) is equal to the buoyancy of the flexible wire harness (2) in the liquid.

7. A three-dimensional flexible rectifying device as claimed in claim 1 or 4, characterized in that: The flexible wire harness (2) is made of a multi-layer composite polymer material or a polymer material with a steel mesh embedded therein.

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